![]() USGS offers another useful tool called elevation profiling. If you aren’t high enough… Slope Within Neighborhoods Everything beyond that up to a 100-year rain backs up into the street until it can be safely released into drainage ditches. Developers size storm drains to hold a 1- or 2-year rain. Streets are usually considered part of the flood retention system. When buying a home, elevation above street level can be a valuable consideration. Others around it ranged from 1 to 3 feet above street level. On a block that flooded badly in Elm Grove, one home escaped. But another home in the same neighborhood has a 4.5 foot difference! This home sits 4.5 feet above the street.Ĭlick around in different neighborhoods, especially those that flooded. ![]() Note 3 foot elevation difference between slab and house in Streets Basemap.
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